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core/cheats: Add and change a few functions

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Added a few interfaces for adding/deleting/replacing/saving cheats. The cheats list is guarded by a std::shared_mutex, and would only need a exclusive lock when it's being updated.

I marked the `Execute` function as `const` to avoid accidentally changing the internal state of the cheat on execution, so that execution can be considered a "read" operation which only needs a shared lock.

Whether a cheat is enabled or not is now saved by a special comment line `*citra_enabled`.
This commit is contained in:
zhupengfei 2019-01-30 23:03:44 +08:00
parent 2731437a17
commit 573036b38e
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GPG key ID: DD129E108BD09378
5 changed files with 117 additions and 16 deletions
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62
src/core/cheats/cheats.cpp
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@ -2,8 +2,10 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <fstream>
#include <functional>
#include <fmt/format.h>
#include "common/file_util.h"
#include "core/cheats/cheats.h"
#include "core/cheats/gateway_cheat.h"
#include "core/core.h"
@ -26,10 +28,54 @@ CheatEngine::~CheatEngine() {
system.CoreTiming().UnscheduleEvent(event, 0);
}
const std::vector<std::unique_ptr<CheatBase>>& CheatEngine::GetCheats() const {
std::vector<std::shared_ptr<CheatBase>> CheatEngine::GetCheats() const {
std::shared_lock<std::shared_mutex> lock(cheats_list_mutex);
return cheats_list;
}
void CheatEngine::AddCheat(const std::shared_ptr<CheatBase>& cheat) {
std::unique_lock<std::shared_mutex> lock(cheats_list_mutex);
cheats_list.push_back(cheat);
}
void CheatEngine::RemoveCheat(int index) {
std::unique_lock<std::shared_mutex> lock(cheats_list_mutex);
if (index < 0 || index >= cheats_list.size()) {
LOG_ERROR(Core_Cheats, "Invalid index {}", index);
return;
}
cheats_list.erase(cheats_list.begin() + index);
}
void CheatEngine::UpdateCheat(int index, const std::shared_ptr<CheatBase>& new_cheat) {
std::unique_lock<std::shared_mutex> lock(cheats_list_mutex);
if (index < 0 || index >= cheats_list.size()) {
LOG_ERROR(Core_Cheats, "Invalid index {}", index);
return;
}
cheats_list[index] = new_cheat;
}
void CheatEngine::SaveCheatFile() const {
const std::string cheat_dir = FileUtil::GetUserPath(FileUtil::UserPath::CheatsDir);
const std::string filepath = fmt::format(
"{}{:016X}.txt", cheat_dir, system.Kernel().GetCurrentProcess()->codeset->program_id);
if (!FileUtil::IsDirectory(cheat_dir)) {
FileUtil::CreateDir(cheat_dir);
}
std::ofstream file;
OpenFStream(file, filepath, std::ios_base::out);
auto cheats = GetCheats();
for (const auto& cheat : cheats) {
file << cheat->ToString();
}
file.flush();
}
void CheatEngine::LoadCheatFile() {
const std::string cheat_dir = FileUtil::GetUserPath(FileUtil::UserPath::CheatsDir);
const std::string filepath = fmt::format(
@ -43,13 +89,19 @@ void CheatEngine::LoadCheatFile() {
return;
auto gateway_cheats = GatewayCheat::LoadFile(filepath);
std::move(gateway_cheats.begin(), gateway_cheats.end(), std::back_inserter(cheats_list));
{
std::unique_lock<std::shared_mutex> lock(cheats_list_mutex);
std::move(gateway_cheats.begin(), gateway_cheats.end(), std::back_inserter(cheats_list));
}
}
void CheatEngine::RunCallback([[maybe_unused]] u64 userdata, int cycles_late) {
for (auto& cheat : cheats_list) {
if (cheat->IsEnabled()) {
cheat->Execute(system);
{
std::shared_lock<std::shared_mutex> lock(cheats_list_mutex);
for (auto& cheat : cheats_list) {
if (cheat->IsEnabled()) {
cheat->Execute(system);
}
}
}
system.CoreTiming().ScheduleEvent(run_interval_ticks - cycles_late, event);